South San Francisco Road Materials
Active WDID 2 41I006082 South San Francisco, San Mateo County Region 2 · San Francisco Bay
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- South San Francisco, San Mateo County
- Region 2 · San Francisco Bay · Location · Statewide map
- Receiving water
- San Francisco Bay (as reported by the facility)
- Evidence: candidate, awaiting review Details
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- 2 waterbodies; 2 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 469 distinct results, 11 reporting years (2015 to 2025)
- Most recent sample Feb 17, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 1 violation record · 1 enforcement action
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 37.6439, -122.41154
- Precision
- 4 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 1321 Lowrie Ave, South San Francisco 94080
- Regional Water Board
- 2 — San Francisco Bay
HUC12 watershed Evidence: spatial
- San Francisco Bay Estuaries-Frontal San Francisco Bay HUC12 180500041001
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- Granite Rock Co Road Materials
- Primary industry (SIC)
- 2951-Asphalt Paving Mixtures and Blocks
- Application ID
- 182883
- NOI processed
- Apr 20, 1992
- Last certified
- Dec 22, 2023
- Facility size
- 5 Acres
- Impervious area
- 70 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 182883 | Industrial | Active | Apr 20, 1992 | — | Dec 22, 2023 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- San Francisco Bay
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C1 name is only a prefix of official names
3 official waterbodies share this name; none is assigned without review.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Colma Creek CAR2044002020080624163112 | 571 m | listed | 1 |
| San Francisco Bay, Lower CAB2041001019980925131322 | 870 m | listed | 10 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
469 distinct measurements across 5 parameters, most recent sample Feb 17, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 16 | 4 | 0 | Oct 14, 2025 | Feb 17, 2026 |
| 2024 | 12 | 3 | 0 | Nov 22, 2024 | Feb 04, 2025 |
| 2023 | 12 | 3 | 0 | Nov 28, 2023 | Jan 22, 2024 |
| 2022 | 12 | 3 | 0 | Nov 08, 2022 | Feb 24, 2023 |
| 2021 | 65 | 4 | 0 | Oct 21, 2021 | Apr 14, 2022 |
| 2020 | 60 | 3 | 0 | Nov 18, 2020 | Feb 02, 2021 |
| 2019 | 57 | 3 | 0 | Dec 04, 2019 | Mar 25, 2020 |
| 2018 | 60 | 3 | 0 | Nov 21, 2018 | Feb 13, 2019 |
| 2017 | 77 | 4 | 0 | Nov 16, 2017 | Mar 01, 2018 |
| 2016 | 55 | 4 | 0 | Dec 15, 2016 | Mar 24, 2017 |
| 2015 | 43 | 4 | 0 | Jan 06, 2015 | Jan 06, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 147 | 86 | Jan 06, 2015 | Feb 17, 2026 | Results |
| pH | SU | 147 | 0 | Jan 06, 2015 | Feb 17, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 147 | 2 | Jan 06, 2015 | Feb 17, 2026 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 22 | 0 | Jan 06, 2015 | Nov 16, 2017 | Results |
| Iron, Total | mg/L | 6 | 5 | Nov 01, 2021 | Feb 16, 2026 | Results |
All results (469 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Feb 17, 2026 | Oil and Grease | 2.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1349683 | |
| Feb 17, 2026 | pH | 7.74 | SU | Effluent | Qualifying Storm Event | pH_Field | 1349683 | |
| Feb 17, 2026 | Total Suspended Solids (TSS) | .7 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1349683 | |
| Feb 16, 2026 | Iron, Total | 4.3 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1376790 | |
| Feb 16, 2026 | Oil and Grease | 5.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1376790 | |
| Feb 16, 2026 | pH | 8.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1376790 | |
| Feb 16, 2026 | Total Suspended Solids (TSS) | 97 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1376790 | |
| Feb 11, 2026 | Oil and Grease | 1.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1368680 | |
| Feb 11, 2026 | pH | 7.05 | SU | Effluent | Qualifying Storm Event | pH_Field | 1368680 | |
| Feb 11, 2026 | Total Suspended Solids (TSS) | 11 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1368680 | |
| Nov 14, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1358713 | |
| Nov 14, 2025 | pH | 7.11 | SU | Effluent | Qualifying Storm Event | pH_Field | 1358713 | |
| Nov 14, 2025 | Total Suspended Solids (TSS) | 26 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1358713 | |
| Oct 14, 2025 | Oil and Grease | 2.9 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1355484 | |
| Oct 14, 2025 | pH | 7.98 | SU | Effluent | Qualifying Storm Event | pH_Field | 1355484 | |
| Oct 14, 2025 | Total Suspended Solids (TSS) | 38 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1355484 | |
| Feb 04, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1321854 | |
| Feb 04, 2025 | pH | 7.38 | SU | Effluent | Qualifying Storm Event | pH_Field | 1321854 | |
| Feb 04, 2025 | Total Suspended Solids (TSS) | 3.1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1321854 | |
| Jan 03, 2025 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1319227 | |
| Jan 03, 2025 | pH | 7.36 | SU | Effluent | Qualifying Storm Event | pH_Field | 1319227 | |
| Jan 03, 2025 | Total Suspended Solids (TSS) | 1.2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1319227 | |
| Dec 12, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1317618 | |
| Dec 12, 2024 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1317618 | |
| Dec 12, 2024 | Total Suspended Solids (TSS) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1317618 | |
| Nov 22, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1316425 | |
| Nov 22, 2024 | pH | 6.4 | SU | Effluent | Qualifying Storm Event | pH_Field | 1316425 | |
| Nov 22, 2024 | Total Suspended Solids (TSS) | 11 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1316425 | |
| Jan 22, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1274560 | |
| Jan 22, 2024 | pH | 7.37 | SU | Effluent | Qualifying Storm Event | pH_Field | 1274560 | |
| Jan 22, 2024 | Total Suspended Solids (TSS) | 2 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1274560 | |
| Jan 03, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | 1272630 | ||
| Jan 03, 2024 | pH | 7.71 | SU | Effluent | Qualifying Storm Event | pH_Field | 1272630 | |
| Jan 03, 2024 | Total Suspended Solids (TSS) | 1 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1272630 | |
| Dec 18, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1270691 | |
| Dec 18, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1270691 | |
| Dec 18, 2023 | Total Suspended Solids (TSS) | 6.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1270691 | |
| Nov 28, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1268554 | |
| Nov 28, 2023 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1268554 | |
| Nov 28, 2023 | Total Suspended Solids (TSS) | 14.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1268554 | |
| Feb 24, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1228813 | |
| Feb 24, 2023 | pH | 7.3 | SU | Effluent | Qualifying Storm Event | pH_Field | 1228813 | |
| Feb 24, 2023 | Total Suspended Solids (TSS) | 9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1228813 | |
| Jan 04, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1223101 | |
| Jan 04, 2023 | pH | 7.63 | SU | Effluent | Qualifying Storm Event | pH_Field | 1223101 | |
| Jan 04, 2023 | Total Suspended Solids (TSS) | 13 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1223101 | |
| Dec 01, 2022 | Oil and Grease | 5.7 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1220708 | |
| Dec 01, 2022 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1220708 | |
| Dec 01, 2022 | Total Suspended Solids (TSS) | ND | mg/L | Effluent | Qualifying Storm Event | A2540D | 1220708 | |
| Nov 08, 2022 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1216092 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 1 | 1 Violation · 0 Potential (preliminary) · 0 Dismissed | Feb 08, 2010 – Feb 08, 2010 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Sep 28, 2010 – Sep 28, 2010 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Feb 08, 2010 – Jul 26, 2018 | Oct 21, 2026 | All inspections |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1335162 | Annual report 2025 | — | |
| Jul 10, 2025 | Annual reports | 1293965 | Annual report 2024 | — | |
| Jul 09, 2024 | Annual reports | 1243042 | Annual report 2023 | — | |
| Jul 14, 2023 | Annual reports | 1189036 | Annual report 2022 | — | |
| Jul 13, 2022 | Annual reports | 1112393 | Annual report 2021 | — | |
| Jul 12, 2021 | Annual reports | 1068397 | Annual report 2020 | — | |
| Jul 14, 2020 | Annual reports | 985633 | Annual report 2019 | — | |
| Jun 29, 2019 | Annual reports | 953174 | Annual report 2018 | — | |
| Jul 26, 2018 | Inspections | 2039036 | B Type compliance | — | Additional Info Required |
| Jul 10, 2018 | Annual reports | 938590 | Annual report 2017 | — | |
| Jul 09, 2017 | Annual reports | 877814 | Annual report 2016 | — | |
| Jun 30, 2016 | Annual reports | 842184 | Annual report 2015 | — | |
| Sep 28, 2010 | Enforcement actions | 402929 | NOV (Notice of Violation) | Active | |
| Feb 08, 2010 | Inspections | 2007890 | B Type compliance | — | Additional Info Required |
| Feb 08, 2010 | Violations | 841774 | Deficient BMP Implementation | Violation | Inspection |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.